Door attachement



I Sept. 16, 1941. I o. E. RIEDEL DOOR ATTACHMENT Filed June 28, 1940 I vtilventor fliaai'llledql Patented Sept. 16, 1941 warren stares PATENTore-ice.

1 Claim.

The present invention relates to improvements in attachments for doorsand the like.

An object of the invention is the provision of a door attachment whichis designed to prevent clandestine withdrawal of a door fastening bolt.

Another object of the invention is the provision of a guard-forming doorattachment which can be quickly and easily fitted upon a door frame.

A further object of the invention is the provision of a guard-attachmentfor doors which can be readily fitted on doors of varying size.

Other objects and advantages of the invention will become apparent asthe description progrosses.

In the accompanying drawing forming a part of this specification and inwhich like reference characters are employed to designate correspondingparts throughout the same:

Figure 1 is a perspective view of a preferred form of the attachmentshowing the sections in separated relation,

Figure 2 is a similar view showing the attachment sections operativelymounted on the frame of the door,

Figure 3 is an end view of the same showing a door latch associatedtherewith,

Figure 4 is an enlarged fragmentary section taken on the line 44 ofFigure 3,

Figure 5 is a perspective View of a modified form of the attachment, and

Figure 6 is a transverse sectional view through the same attached to adoor frame.

Referring to Figures 1 to 4 inclusive, wherein is illustrated apreferred embodiment of the invention, M generally designates the mainsection of the device, embodying a rigid plate formed of sheet metal orthe like, shaped to provide a fastening plate In of elongatedrectangular formation.

At one longitudinal edge of the plate I!) is formed an extension part,shaped to form a rectangular laterally protruding face portion I Ihaving a rectangular central area struck and bent rearwardly to form aright angularly projecting medial flange I2. At the ends of theprojecting portion II are provided approximately rectangular shaped endflanges I3 extending at right angles to the face portion II, as shown toadvantage at Figure 1. At the outer longitudinal edge portion of theface part II is provided a right angularly extending side flange I 4somewhat narrower than, and bent so that the ends are pressed againstthe outer edges of, the end flanges I3.

A section 0 complementary to the section M embodies a rigid strip ofmetal or the like bent longitudinally to form a relatively narrow flangeI6 and a right angular generally wider flange II. This flange is cut toform therein a longitudinally elongated recess I8 in the outer portion,the length of which corresponds to the length of the plate I0 toslidably receive the latter therein. Intermediate the ends of the recessI8 the edge portion of the flange I1 is cut and bent in a directionopposed to the extension of the flange I6 to form a right angular narrowlip I9.

The device is fitted on the frame of the door by initially mounting thesection 0 so that the flange I1 is arranged, in flush position, againstthe face of the door jamb, designated at J, while the right angularflange I6 is mounted in flush position against the side edge of a stopstrip S, as shown at Figure 2. The section is firmly fastened inposition by means of screws 2| extended through countersunk holes 22while a groove is formed in the jamb to accommodate the inwardlyprojecting lip I9. The companion section M is disposed with the plate I0fitted flush against the face of the jamb with the inner end portion inregistration with the recess I8 in the section 0, screws 24 extendingthrough holes 23 to fasten the plate in position. The laterallyprojecting portion of the plate I ll protrudes from the side edge of theframe jamb, forming a keeper frame having the face portion II co-planarwith the plate l0 while the medial flange I2 fits against the side ofthe jamb and is secured thereto by a screw 25. The inner edges'of theend flanges I3 likewise fit against the side of the door frame so thatthese flanges, together with the outer flange I4, make a strong firmlymounmd keeper frame.

The modified form of the device, shown at Figures 5 and 6, provides aunitary structure formed of a metallic sheath shaped to provide anelongated body plate 26 having the inner longitudinal edge portion bentto form a right angular flange 2'! adapted to be fitted against the doorframe stop. At the opposite outer edge of the plate 26, intermediate theends, is formed a laterally projecting keeper frame F having the rightangular flange structure corresponding to the frame shown and describedin the preferred form of the attachment.

This construction presents an efficient guard plate which can be readilymounted on the frame jamb of the door to provide an effective guardwhich will prevent clandestine retraction of a locking bolt, as forinstance the bolt B of the night-latch L, as by the insertion of aninstrument for engaging and withdrawing the beveled head of the bolt.Furthermore, the attachment affords a very durable and efficient keeperframe. It will also be noted that the two-piece form of the device isconveniently adjustable in the as sembly of, the sections to fit doorjambs of varying width, due to the engageable relation of the holderplate I 0 with the recess I 8 in the inner flange of the companionsection 0.

It is to be understood that the forms of my invention herein shown anddescribed are to be taken as preferred examples of the same, and thatvarious changes as to the shape, size and arrangement of parts may beresorted 110 of the frame member to reinforce the said member.

OSCAR E. RIEDEL.

